Power-hammer



Z: 777 asjes G. FOGDE.

HAMMER.

.ILED JAN. 2. 1920.

Patented Oct. 25, 1921 2 SHEETS-SHEET 2.

PATENT @FFHQE.

GUSTAV FOGDE, 0F HOQ'LTIAM, WASHINGTON.

POWER-HAMMER.

v Specification of Letters Patent.

Patented Oct. 25, 1921.

Application filed January 2, 1920. Serial No. 348,983.

To all whom it may concern:

Be it known that I, GUSTAV Focnn, a citizen of Finland, residing atHoquiam, in the county of Grays Harbor and State of Washington, haveinvented certain new and useful Improvements in Power-Hammers, of whichthe following is a specification.

This invention relates to improvements in power hammers and its chiefobject is to provide a machine that can be used either for general dropforging, as a bolt making machine, or as a machine for re-forming boltheads; a square, hexagonal, etc. head bolt being changed to a rivetbolt, etc. A

further object is to provide a machine of this type that is simple inconstruction and efficient in operation. With the foregoing and other obects in view the invention consists in the combination and arrangementof parts to be hereinafter fully described, pointed out in the appendedclaim and illustrated in the accompanying drawings which form a inwhich- Figure 1 is a view of my improved power hammer in side elevation.

Fig. 2 is a cross section taken on line 2-2 Of Fig. 1;

Fig. 3 is a fragmentary view in front elevation.

Fig. 4: is a detail view of the anvil showing itsarrangement upon thebase block.

F ig. 5 is a view in elevation of Fig. 4.

Figs. 6 and are enlarged fragmentary sectional views; at right angles toeach other, of the hammer and die carried thereby.

Fig. 8 is a perspective view of the die.

Like reference characters denote corresponding parts throughout theseveral views.

The machine comprises the frame 1 arranged upon the base 2 and providedwith the base block 3 which is formed with the part of thisspecification and deep set substantially V-shaped vertical groove 4 inits front face, said groove being of a depth equal substantially toone-half the diameter of the base block. The upper end of the base blockis formed with a horizontal groove 5 which extends transversely acrossthe groove 4 and registers same, said groove being stepped to form aseat for the normally stationary clamping die 6 and a runway for themovable clamping die 7, the adjacent ends of the clamp ing dies beingformed with the recesses 8 to receive the work. .A'screw 9 journaled ina with the bearing 10 carried by the base block is attached to theclamping die 7 and is provided with the hand wheel 11 by which it isoperated.

The frame 1 is formed with an extension 12 that terminates in the guidebearing 13 for the reciprocating head 14 that is carried and operated bythe crank 15 secured to the wheel 16 that is fast upon the stub shaft 17journaled in bearing 18 which shaft also carries the clutch section 19that cooperates with the clutch section 20 keyed to transmission shaft21 journaled in bearing 22 and driven by pulley 23 which isbelt-connected to the power source. The clutch section 20 is controlledby the bell-crank 24 fulcrumed in a bearing 25 carried by the frame,said bell-crank being connected by pitman 26 to the foot lever 27fulcrumed in bearings 28 of the base 2, said foot lever encompassing thebase block for operation by the operator from his usual position infront of the machine. A spring 29 connects the foot lever with aneye-bolt 30 carried by the frame and serves to yieldingly retain thefoot lever in raised position with'relation. to the base to normallykeep the clutch sections disengaged.

The head 14 is provided with a removable face block 31 and is recessedto receive the die 32 having the recessed end 33 for forming orre-forming the bolt heads. The shape of the recessed portion 33 of thedie determines the proposed shape of the bolt head. The bolt or metalbar34- to be headed or to have its head re-shaped is placed in the anvildirectly beneath the recessed end of the die 32. The foot lever 27 isthen depressed to cause the head 14: to reciprocate and the die 32 toengage with the bolt or piece 34. .lVith the die 32 removed from thehead and a metal block of the shape of the die substituted the head willserve as a hammer for use in the ordinary manner for drop forging.

What is claimed is In a power hammer, a frame, a guide hearing carriedthereby, a reciprocating recessed head arranged in said guide bearing, adie removably'arranged in the recessed portion of said head, a removableface block for said head adapted to cover said die when in position,means for actuating said head, a longitudinally and transverselyrecessed base block in alinement with the said guide bearing and beneaththe same, the said recesses registering one with the other, clampingdies arranged in the transversely recessed portion of said base block,said dies being normally spaced apart in the plane of the saidlongitudinal recess, and manually operable means for operating saidclamping dies.

In testimony that I claim the foregoing as my own I have hereto afiixedmy signa ture in the presence of two subscribing Wit 10 GUSTAV FOGDE.Witnesses:

VICTOR RAY, J OHN OsTERsA n.

